Riegel, Nancy (2 August 2018). "Die stillen Zeugen der Elbe" [The silent witnesses of the Elbe]. Sächsische Zeitung (in German). Archived from the original on 2 August 2018. Retrieved 2 August 2018.
doi.org
David, Lederer (8 August 2017). "Climate and History: Hunger, Anti-Semitism, and Reform During the Tambora Crisis of 1815–1820". German History in Global and Transnational Perspective. Springer. p. 24. doi:10.1057/978-1-137-53063-9_2.
Riegel, Nancy (2 August 2018). "Die stillen Zeugen der Elbe" [The silent witnesses of the Elbe]. Sächsische Zeitung (in German). Archived from the original on 2 August 2018. Retrieved 2 August 2018.
"Zeuge schlechter Zeiten" [Witness of bad times]. SZ-Online (in German). 11 August 2018. Archived from the original on 15 August 2018. Retrieved 28 August 2018.
"Zeuge schlechter Zeiten" [Witness of bad times]. SZ-Online (in German). 11 August 2018. Archived from the original on 15 August 2018. Retrieved 28 August 2018.